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How does a emergency load release button work in a PL87

Customer Question
How does a emergency...

How does a emergency load release button work in a PL87 sideboom work when activated and does it need to be reset after its been activated.

Mechanic's Assistant: What is the complete model and serial number of your machine?

SEBU8007-02

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

Don't need to be fixes just wondering how it works

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

No that's it tks

Submitted: 11 months ago.Category: Construction and Road Equipment
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Answered in 11 hours by:
9/11/2017
Mechanic: Dan, Technician replied 11 months ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 6,887
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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Mechanic: Dan, Technician replied 11 months ago

Page 1

PL87

Pipelayer

Engine

Weights

Engine Model

Cat® C15 ACERT™

Operating Weight

54 485 kg

120,119 lb

Net Power – ISO 9249

273 kW

366 hp

Lift Capacity

Net Power – ISO 9249 (Metric)

371 hp

Lift Capacity at Tipping Point – ISO 8813

97 069 kg

214,000 lb

Page 2

2

PL87 Pipelayer Features

Performance

Improved hydraulics offer greater response and

more precise control. New heavy duty winch

works with updated hydraulic system for greater

machine productivity.

Slope Capability

Lengthened track-roller-frame and repositioned

rear idler puts more track on the ground, enhancing

slope capability.

Lift Capacity

New counterweight profile adds more weight

providing increased lift capacity. The PL87 has

a rated lift capacity of 97 069 kg (214,000 lb).

Operator Interface

New control handle puts boom and hook functions

in the operator’s right hand. Enclosed cab option

aids operator comfort and offers outstanding visibility.

New dual brake pedals enhance machine control,

especially on slopes and for turning within a tight

pipeline right-of-way.

Safety

Additional large surface mirrors enhance visibility

for the operator, and a modified block set design

reduces the profile for greater visibility to the pipe.

New, easy-to-service ladder design offers enhanced

access/egress to the operator station.

Transportability

New lower winch profile reduces shipping envelope

and aids transportability. New bolt-on block horn

has been added to the front of the machine for more

convenient transport/storage of the block set.

Contents

Pipelayer...............................................................3

Operator Station ..................................................4

Implement and Steering Controls ....................5

Enclosed Cab .......................................................6

Engine and Power Train .....................................7

Structure...............................................................8

Undercarriage .....................................................8

Integrated Technologies ....................................9

Sustainability .......................................................9

Serviceability .....................................................10

Safety ..................................................................11

Renowned Cat Dealer Support .......................11

PL87 Specifications ..........................................12

PL87 Standard Equipment................................15

PL87 Mandatory Attachments

and Optional Equipment ...................................15

Cat® Pipelayers have been the standard of the pipeline

industry for decades. A worldwide network of Cat dealers,

in tune with the special high production needs of pipeliners,

supports these durable and dependable machines.

Cat Pipelayers are purpose-built to meet the unique

demands of pipeline customers. And like every Cat machine,

pipelayers are designed for long life, serviceability and

rebuild capability to help keep owning and operating

costs low. The PL87 answers customer needs for increased

lift capacity, enhanced slope capability, ease of operation,

performance and transportability.

Page 3

Pipelayer

Integrated, robust components

Winches

New heavy-duty winch design works with updated machine

hydraulics for greater productivity. Boom and hook draw

works are driven by independent hydraulic winches. Oil-disc

brakes provide smooth operation and positive retention of

boom and hook positions. A modular, pin-on design allows

for fast replacement and easy field service. Interchangeable

parts between hook and boom winch assemblies help reduce

cost and downtime. The winch profile has been reduced to

enhance visibility and meet critical transport requirements

for rail shipment.

Counterweight

New counterweight profile adds more counterweight,

increasing lift capacity. Segments are contoured to provide

a low center of gravity and enhanced visibility to the front

and side. The counterweight is extended hydraulically for

improved load balance and clearance. Segments are splined

for ease of assembly and disassembly. The PL87 has a rated

lift capacity of 97 069 kg (214,000 lb).

Boom

The light weight, durable boom features high tensile strength

steel construction for narrow structures and maximum visibility

to the work area. Replaceable boom-mount bearings aid

serviceability and long life.

Blocks and Hook

Updated block set profile enhances visibility to the pipe

and helps take advantage of the full length of the boom.

The heavy-lifting components include hook and boom blocks

with sleeve bearings, a forged hook with latch and serviceable

handle, and ductile iron sheaves. A bolt-on block horn has

been added to the front of the machine for convenient

storage of the block set during transport.

Drawbar

A robust drawbar tows a wide range of attachments

for maximum versatility.

3

Page 4

Operator Station

Designed for Productive Comfort

Caterpillar designs operator stations for maximum productivity. Operator comfort features and excellent

visibility all around the machine help operators work more efficiently and contribute to job site safety.

Customers may choose an Open Cab (OROPS), an Enclosed Cab with single pane glass, or an Arctic Cab

with Dual Pane glass.

• A Roll Over Protection Structure (ROPS) provides added operator protection with an open

or enclosed cab.

• A more durable access ladder design aids access/egress to the operator station, and can be removed

to minimize the machine’s shipping envelope.

• Additional mirrors further enhance the operator’s visibility all around the machine.

• Ergonomically designed seat is positioned for enhanced visibility to the trench and for convenient

access to key operator control levers and pedals.

• Monitoring system provides instant feedback on the condition of operating systems and records

performance data for diagnostics and to help manage undercarriage wear. The system also features

a digital and gauge-type tachometer.

• 12-volt outlets power devices like cell phones and laptop computers.

4

Page 5

5

Implement and Steering Controls

Ergonomically Designed for Ease of Operation

Pipelayer Control

Right joystick places all of the boom, hook and counterweight

function control in one hand. Low-effort, ergonomically

designed control handle allows simultaneous, precise

positioning of the load line and boom.

1) Increment/decrement buttons on pipelayer control handle

provide continuous adjustable throttle.

2) Thumb rocker controls the counterweight functions.

3) Joystick forward lowers the hook and joystick back raises

the hook. Joystick left lowers the boom and joystick right

raises the boom.

4) Quick drop control.

5) Rocker switch allows the operator to increase/decrease

engine speed to a set level with the touch of a button.

Quick Drop Control

The new quick drop control, when pushed, will allow the

load on the hook to free fall to the ground. This control is

to be used only in emergency situations where the load must

be released immediately.

Ask Your Own Construction and Road Equipment Question
Mechanic: Dan, Technician replied 11 months ago

This will cause the winch to go to free fall and release the load but will automatically reset itself once released.

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Mechanic: Dan, Technician replied 10 months ago

Hi, Did you get this resolved?If so, Please take a moment to rate as that is how the site credits my time helping on the site or let me know if you need more help. 5 star and bonuses are always greatly appreciated.

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